console.log('实现对象间原型继承的函数');
var util = require('util');
function Base(){
    this.name='base';
    this.base="1991";
    this.sayHello=function(){
        console.log("Hello "+this.name);
    };
}
Base.prototype.showName=function(){
    console.log(this.name);
};
function Sub(){
    this.name='sub';
};
util.inherits(Sub,Base);
var objBase=new Base();
objBase.showName();
objBase.sayHello();
console.log(objBase);
var objSub=new Sub();
objSub.showName();
//objSub.sayHello();
console.log(objSub);

